Mercurial > hg > orthanc-webviewer
diff Plugin/DecodedImageAdapter.cpp @ 0:02f7a0400a91
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 25 Feb 2015 13:45:35 +0100 |
parents | |
children | 111689a2c177 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Plugin/DecodedImageAdapter.cpp Wed Feb 25 13:45:35 2015 +0100 @@ -0,0 +1,122 @@ +/** + * Orthanc - A Lightweight, RESTful DICOM Store + * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "DecodedImageAdapter.h" + +#include "ViewerToolbox.h" +#include "ParsedDicomImage.h" + +#include <boost/lexical_cast.hpp> +#include <boost/algorithm/string/predicate.hpp> +#include <json/writer.h> + +namespace OrthancPlugins +{ + bool DecodedImageAdapter::ParseUri(CompressionType& type, + uint8_t& compressionLevel, + std::string& instanceId, + const std::string& uri) + { + size_t separator = uri.find('-'); + if (separator == std::string::npos && + separator >= 1) + { + return false; + } + + std::string compression = uri.substr(0, separator); + instanceId = uri.substr(separator + 1); + + if (compression == "deflate") + { + type = CompressionType_Deflate; + } + else if (boost::starts_with(compression, "jpeg")) + { + type = CompressionType_Jpeg; + int level = boost::lexical_cast<int>(compression.substr(4)); + if (level <= 0 || level > 100) + { + return false; + } + + compressionLevel = static_cast<uint8_t>(level); + } + else + { + return false; + } + + return true; + } + + + + bool DecodedImageAdapter::Create(std::string& content, + const std::string& uri) + { + std::string message = "Decoding DICOM instance: " + uri; + OrthancPluginLogInfo(context_, message.c_str()); + + CompressionType type; + uint8_t level; + std::string instanceId; + + if (!ParseUri(type, level, instanceId, uri)) + { + return false; + } + + std::string file = "/instances/" + instanceId + "/file"; + + std::string dicom; + if (!GetStringFromOrthanc(dicom, context_, file)) + { + return false; + } + + ParsedDicomImage image(dicom); + + Json::Value json; + + if (type == CompressionType_Deflate) + { + if (!image.EncodeUsingDeflate(json, 9)) + { + return false; + } + } + else if (type == CompressionType_Jpeg) + { + if (!image.EncodeUsingJpeg(json, level)) + { + return false; + } + } + else + { + return false; + } + + Json::FastWriter writer; + content = writer.write(json); + return true; + } +}